How much diversity is really in a small plot of land? Objective 1. Students will be able to describe a type of plant by its structure. 2. Students will be able to use resources to interpret their observations of a small plot of land. 3. Students will be able to analyze their observations through graphing. Background This lesson is meant to springboard a unit on biodiversity. It could also be a fun way to teach graphing skills in math class. This lesson uses a ground cover study. These are used by scientists to study how much plant material is in a large plot of land. Developed in the 1950s, th Duration: 90 Minutes.